I'm crazy for dpn's size 4mm or 5mm. Love knitting socks with them and fingerless gloves. They seem to fit my hand well and I'm not always stabbing myself with them and I seem to knit faster and with more equal tension.
I have circulars, got the interchangeable ones and I love them too especially for sweaters and other large knitted things but I always come back to my double points.
The ones I love are a soft purple colour...